[Bindable]
[Embed(source = "image/first.jpg")]
private var bgFirst:Class;
[Bindable]
[Embed(source = "image/second.jpg")]
private var bgSecond:Class;
[Bindable]
[Embed(source = "image/third.jpg")]
private var bgThird:Class;
[Bindable]
[Embed(source = "image/left.png")]
private var firstLeft:Class;
[Bindable]
[Embed(source = "image/right.png")]
private var firstRight:Class;
[Bindable]
[Embed(source = "image/arrow_down.png")]
private var firstDown:Class;
[Bindable]
[Embed(source = "image/arrow_up.png")]
private var firstUp:Class;
